A typical large coal fired electric power plant produces 1,200MW of electricity by burning fuel with...
A typical large coal fired electric power plant produces 1,200MW of electricity by burning fuel with energy content of 3,000 MW. Three hundred and forty (340) MW are lost as heat up the smokestack leaving the rest to drive a generator to produce electricity. However, the thermal efficiency of the turbine is only 45%. That is 45% of the remaining power goes to drive the generator, and 55% is waste heat that must be removed by cooling water. Assume that cooling water from an adjacent river at 15oC with a total flow rate of 125m3/s , is used to remove this waste heat. What is the final temperature of the cooling water?
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A typical large coal fired electric power plant produces 1,200MW
of electricity by burning fuel with...
Thermal pollution in wastewater. A 1000-MW coal-fired power plant with an efficiency of 35% uses water...
Thermal pollution in wastewater. A 1000-MW coal-fired power plant with an efficiency of 35% uses water from a neighboring stream (with flow of 75 m3/s and 20°C) to carry away waste heat. About 12% of waste heat goes up in the smokestack; the remaining 88% is taken away by cooling water. (a) Calculate the amount of waste heat (inkWorkJ/s) to be removed by cooling water (b) If the cooling water is only allowed to rise in temperature by 11°C, what...
A typical coal-fired power plant burns 290 metric tons of coal every hour to generate 800...
A typical coal-fired power plant burns 290 metric tons of coal every hour to generate 800 MW of electricity. 1 metric ton= 1000 kg. The density of coal is 1500 kg/m3 and its heat of combustion is 28 MJ/kg. Assume that all heat is transferred from the fuel to the boiler and that all the work done in spinning the turbine is transformed into electrical energy. Part A)Suppose the coal is piled up in a 8.0 m × 11 m...
A coal-fired steam power plant produces 175 MW of electric power. The power plant operates on...
A coal-fired steam power plant produces 175 MW of electric power. The power plant operates on a Rankine cycle with turbine inlet conditions of 7 MPa and 550oC and a condenser pressure of 15 kPa. The turbine efficiency and pump efficiency are both 0.8. The coal has a heating value (energy released when the fuel is burned) of 29,300 kJ/kg. Assuming that 85 percent of this energy is transferred to the steam in the boiler and that the electric generator...
At a coal-burning power plant a steam turbine is operated with a power output of 558...
At a coal-burning power plant a steam turbine is operated with a power output of 558 MW . The thermal efficiency of the power plant is 39 % . You may want to review A)At what rate is heat discarded to the environment by this power plant? B) At what rate must heat be supplied to the power plant by burning coal?
Consider a coal-fired steam power plant that produces 175 MW of electric power. The power plant o...
Consider a coal-fired steam power plant that produces 175 MW of electric power. The power plant operates on a simple ideal Rankine cycle with turbine inlet conditions of 8 MPa and 560°C and a condenser pressure of 8 kPa. The coal has a heating value (energy released when the coal is burned) of 29,300 kJ/kg and a CO2 emission value of 0.093 kg CO2/MJ. Assuming that 85% of this energy is transferred to heat in the boiler and that the...
2- What is the efficiency of a typical coal-fired power plant? That is, what percentage of...
2- What is the efficiency of a typical coal-fired power plant? That is, what percentage of the thermal energy from burning the coal is successfully turned into electricity?
20.54---- A typical coal-fired power plant generates 1000 MW of usable power at an overall thermal...
20.54---- A typical coal-fired power plant generates 1000 MW of usable power at an overall thermal efficiency of 38%. a) What is the rate of heat input to the plant? b) The plant burns anthracite coal, which has a heat of combustion of 2.65×107J/kg. How much coal does the plant use per day, if it operates continuously? c) At what rate is heat ejected into the cool reservoir, which is the nearby river? d) The river's temperature is 18.0 ∘C...
What is the role of burning coal in an electrical power plant? The heat is converted...
What is the role of burning coal in an electrical power plant? The heat is converted to electricity by a thermocouple. The heat boils water. The light from coal burning is converted to electricity by a photovoltaic panel. The heat produces a rush of wind which turns a turbine. The expansion of gases caused by burning coal makes pistons turn in an internal combustion engine.
A typical coal-fired power plant burns 320 metric tons of coal every hour to generate 2.6×106...
A typical coal-fired power plant burns 320 metric tons of coal every hour to generate 2.6×106 MJ of electricity. 1 metric ton = 1000 kg; 1 metric ton of coal has a volume of 1.5 m3. The heat of combustion is 28 MJ/kg. Assume that all heat is transferred from the fuel to the boiler and that all the work done in spinning the turbine is transformed into electrical energy. 1. Suppose the coal is piled up in a 10...
A typical coal-fired power plant generates 1000 MW of usable power at an overall thermal efficiency...
A typical coal-fired power plant generates 1000 MW of usable power at an overall thermal efficiency of 37%. Part A What is the rate of heat input to the plant? Part B The plant burns anthracite coal, which has a heat of combustion of 2.65×107J/kg. How much coal does the plant use per day, if it operates continuously? Part C At what rate is heat ejected into the cool reservoir, which is the nearby river? Part D The river's temperature is...
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